Radio transmitter



FIG. 1 is a front elevational view of a radio transmitter showing my new design;

FIG. 2 is a left side elevational view thereof, the right side being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a top, front and left side perspective view thereof, shown with the antenna in the extended position. 

The ornamental design for a radio transmitter, as shown and described. 